Finding the Fourth Proportional to 14,188.50, 19,580.16 and 7,902.12

Step by Step Solution

1. Step 1: Write the proportion equation
   14,188.50 : 19,580.16 = 7,902.12 : x
2. Step 2: Convert to fraction form
   14,188.50/19,580.16 = 7,902.12/x
3. Step 3: Cross multiply
   14,188.50x = 19,580.16 × 7,902.12
4. Step 4: Simplify right side
   14,188.50x = 154,724,773.94
5. Step 5: Solve for x
   x = 154,724,773.94/14,188.50
6. Step 6: Final answer
   x = 10,904.94